Improvement in the manufacture of steel plates and blocks



UNITED STATES. PATENT Ema J-AMES YATES, OF ROTHERHAM, ENGLAND.

IMPROVEMENT IN THE MANUFACTURE OF STEEL PLATES AND BLOCKS.

Specification forming part of Letters Patent No. 188,458, dated March 13, 1877 application filed July 26. 1876.

To all whom it may concern Be itknown that I, JAMES YATES, of Bother-- ham, in the county of York, England, esquire, haveinvented certain new and useful Improvements in theMan ut'acture of Plates and Blocks for Ship and Fort Armor, and other purposes, of which the following is a true, full, and ex act description My invention consists in the production of compound blocks or masses of steel of proper strength and quality, suitable for forts, (fixed or floating,) ships armor, beams, supports, and other purposes, most of which are now produced by Welding, stamping, or rolling wrought-iron.

In carrying out my said invention I construct the above-mentioned steel blocksor masses by running into an open or closed mold molten steel of one temper or hardness, and then upon its upper surface running a second layer of molten steel of another-temper or hardness, and repeating the operation when required, so as to form as many strata of difl'erenttempered steel as may be desired, and arranged according to their temper or hardness as may be required, forming thereby one solid and compact compound mass, to be either at once used or to be stamped, rolled, or pressed, to give them the form required, and to impart strength to bear greater pressure or strain tensibly, compressively, or by impact from projectiles or heavy blows. The molten steel, of varying temper and hardness, is successively poured into the mold before the preceding stratum is cold.

With regard to the materials to be employed, I prefer such steel as is commonly known as Bessemer steel, which can be made ofa hard,

, soft, or medium temper or. hardness; but I specifications of Letters Patent for Great Britain granted tome, No. 542, 6th February,

Having now described and particularly asoertained the nature of my said invention, and the manner in which the same is or may be used or carried into effect, I would observe in conclusion that whatI consider to be novel and original, and therefore claim as the invention secured to me by the hereinbefore in part recited Letters Patent, is-

1. The process of forming armor-plates,

beams, or other blocks or masses from steel of varying temper and hardness, by runningv the same in a molten condition successively. into molds, substantially as herein set forth.

2. The process of forming armor-plates, beams, or other blocks or masses from steel of varying temper and hardness, by first running the same in a molten condition successively into molds, and by then stamping, rolling, or pressing the same, substantially as set forth.

3. As a new article of manufacture, compound blocks or masses of steel suitable for shipsand fort armor, beams, supports, girders, rails, tires, boiler and ship plate, and other purposes, consisting of strata of steel of varying temper and hardness, prepared and treated in the manner herein described.

1 In witness whereof I have signed my name to this specification in the presence of two subscribing witnesses.

' JAMES YATES.

Witnesses:

F. F. HIBBERT, JNo. HY; DAVIDSON. 

